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Method for producing diagnostic allergen

IPC classes for russian patent Method for producing diagnostic allergen (RU 2428197):
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Method for production of diagnostic allergen / 2311925
Claimed method includes alkali extraction of raw materials followed by centrifugation, filtering, and sterilizing filtering of target product, wherein as raw material mixture of frozen cockroaches is used. Said mixture is crushed, then ether is added, mixture is shacked, filtered, dried to full ether evaporation, grated to produce powder. In obtained powder ether is added again, powder is dried to full ether evaporation, and alkali extraction is carried out. Extracting material is agitated and for 3 days is shacked three times daily for 30 min with 1.5 h interval and stored for these intervals at 2-10°C. After extraction supernatant is discharged, centrifuged, and after sterilizing filtering sterile allergen solution is held for 1-3 months at 2-10°C.
Chinese therapeutic composition, therapeutic insect extracts contained in containing and methods of preparing composition Chinese therapeutic composition, therapeutic insect extracts contained in containing and methods of preparing composition / 2427381
Invention refers to pharmaceutical industry, particularly to an agent for treating cardiovascular and cerebrovascular diseases. A method of preparing a therapeutic composition for treating cardiovascular and cerebrovascular diseases that involves selection of scorpion, centipede, eupolyphaga or steleophaga, leech, cicadas, ginseng root, prepared incense, peony root, sweet and white sandal wood, boras camphor and Ziziphi spinosae seeds according to the preset amounts, preparation of crude therapeutic extracts of said initial materials, agitation of the prepared extracts. A product of the therapeutic composition for treating cardiovascular and cerebrovascular diseases. A method of preparing the therapeutic insect extracts for treating cardiovascular and cerebrovascular diseases. The therapeutic insect extracts for treating cardiovascular and cerebrovascular diseases.

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to pharmacology and medicine, namely to a method for producing diagnostic allergens of a number of synanthropic insects, such as: Blattella germanica, Blatta orientalis, Pertplaneta americana cockroach Neuphoeta cinerea, Musca domestica, Tinea pelionella, Cimex lectularis, Monomorium pharaonis, Tegenaria derhami, Culex pipiens, Attagenus Smirnovi Zhan. For the method for producing the diagnostic allergen, initial raw materials are frozen synanthropic insects. The initial raw materials are grinded to particle size 1-3 mm, degreased by addition of ether in the ratio 1:3-4 to the raw materials; the raw materials are kept in ether during 15-20 min that is followed by removal of ether by mixture filtering; the raw materials are degreased again by ether, dried to complete ether removal; the completely fat-free raw materials are powdered. The prepared powder is extracted in two stages; the first stage involves pouring the powder with an extractant liquid 1:1 and mixing to a homogeneous suspension; and the second stage includes mixing the prepared suspension with the extractant liquid in the ratio 2:1 and agitating by shaking the suspension three times for 30 minutes every 1.5 hours at temperature 2-10°C for 3 days with daily correction of the pH value of the allergenic extract to 7.0-7.2.

EFFECT: invention provides extended range of the diagnostic allergens and creation of a highly effective preparation for the diagnostic diseases caused by sensitisation to synanthropic insects.

2 cl, 1 ex, 1 tbl

 

The invention relates to pharmacology and medicine, particularly to a method of obtaining diagnostic allergens from synanthropic insects, such as red cockroach (Blattella germanica), black cockroach (Blatta orientalis), the American cockroach (Periplaneta americana), cockroach ash (marble) (Neuphoeta cinerea), the fly room (Musca domestica), mol a (Tinea pelionella), the bed bug (Cimex lectularis), red ant house (Monomorium pharaonis), the house spider (Tegenaria derhami), the ordinary mosquito (Culex pipiens), Majeed (Attagenus Smirnovi Zhan).

A method of obtaining tick allergen for setting diagnostic tests and treatment, including water-salt extraction of raw materials and the processing of formaldehyde, as a source of raw materials used culture house dust mites Dermatophagoides Farina or Dermatophagoides pteronyssinus, extraction with a solution of ammonium hydrogen carbonate, centrifugation for 45 min, filtering the extract, dialysis for 52 hours at a temperature of 6±2°C, twice for 24 h against a 0.002 M solution of ammonium hydrogen carbonate and once within 4 hours against distilled water, centrifuging cialisovernight extract for 1 h, filter it through paper the filter holding freeze drying to a residual moisture content of not more than 4%, dissolving the dry residue in sterile conditions in 0.1 M phosphate buffer with pH 7.5, add the giving of 1%aqueous solution of formaldehyde, holding sterilizing filtration, keeping formalisations of allergoids for 32 days at a temperature of 32°C, followed by dialysis at a temperature of 6±2°C against 0.1 M phosphate buffer solution with pH 7.5 to obtain the final form of the allergen to diagnose (EN 2265450, A61K 39/00, 2005).

The disadvantage of this method is the limited action of the allergen.

The main cause of year-round respiratory allergies (asthma, allergic bronchitis, allergic conjunctivitis and other) are the allergens of man's dwelling. In the main part of them is house dust is composed of waste products of various organisms, satellites biocenosis person: mites, insects, Pets, etc. the Last decade, researchers have drawn attention as a cause of allergies, synanthropic insects, which are found in man in all regions of the world. It is shown that 60-80% of patients with bronchial asthma sensitized to the cockroaches, in 10-29% of cases are positive skin tests to extract flies. Allergic reactions to the bites of blood-sucking insects have 17-20% violence. Maximum figures are for the United States and Japan, is somewhat lower for countries in the Middle East, Israel.

In the CIS such studies were not conducted, and euda only indirect information about the high prevalence of IgE antibodies to cockroach in children however, they are obtained with the help of foreign test systems. The main reason is the lack of domestic preparations of allergens. On the other hand drugs abroad are mostly ad hoc and need more detailed physico-chemical characterization and standardization. This work is being actively carried out abroad.

For the diagnosis of hypersensitivity to synanthropic insects necessary preparations of allergens, which can be used for the production of skin samples and for use in the reactions in vitro. Such preparations allergens in domestic allergological practice no.

Expanding the range of manufactured drugs for the diagnosis of allergic conditions is an important task of practical health care. For drugs that are needed for solving this problem include allergens from synanthropic insects developed in SU NIELS them. Mechnikov RAMS.

The technical result of the invention is to expand the range of diagnostic allergens and the development of highly effective drugs for the diagnosis of diseases caused by sensitization to synanthropic insects such as the red cockroach (Blattella germanica), black cockroach (Blatta orientalis), the American cockroach (Periplaneta americana), cockroach ash is hydrated (marble) (Neuphoeta cinerea), the fly room (Musca domestica), mol a (Tinea pelionella), the bed bug (Cimex lectularis), red ant house (Monomorium pharaonis), the house spider (Tegenaria derhami), the ordinary mosquito (Culex pipiens), Majeed (Attagenus Smirnovi Zhan).

To achieve the technical result in the method of obtaining diagnostic allergen, comprising the alkaline extraction of raw materials, centrifuging, filtering and sterilizing filtration to obtain the final form of diagnostic allergen, according to the invention as a source of raw materials used frozen synanthropic insects, crushed raw materials on the particle size of 1-3 mm, degreased crushed raw material by adding in raw materials ethyl ester in a ratio of 1:3-4, sustain raw material in ethyl ether for 15-20 min with subsequent removal of the ether by filtration of the mixture, again degrease raw materials ethyl ether, dried to remove the ether, crushed completely skimmed raw materials to powder and the extraction of the obtained powder is carried out in two stages, the first of which poured the powder extracting liquid 1:1 and stirred until a homogeneous suspension, and in the second stage, the resulting suspension is mixed with the extracting liquid in a ratio of 2:1 and mix by shaking the suspension three times at 30 minute intervals between the by shaking for 1.5 hours at a temperature of 2-10°C for 3 days with daily pH correction allergenic extract to 7.0 to 7.2.

Used separately, each type of the following frozen synanthropic insects: red cockroach (Blattella germanica), black cockroach (Blatta orientalis), the American cockroach (Periplaneta americana), cockroach ash (marble) (Neuphoeta cinerea), the fly room (Musca domestica), mol a (Tinea pelionella), the bed bug (Cimex lectularis), red ant house (Monomorium pharaonis), the house spider (Tegenaria derhami), the ordinary mosquito (Culex pipiens), Majeed (Attagenus Smirnovi Zhan).

The invention is illustrated in the following examples.

Example 1. Receive diagnostic allergen of synanthropic insects: red cockroach (Blattella germanica), black cockroach (Blatta orientalis), the American cockroach (Periplaneta americana), cockroach ash (marble) (Neuphoeta cinerea), the fly room (Musca domestica), mol a (Tinea pelionella), the bed bug (Cimex lectularis), red ant house (Monomorium pharaonis), the house spider (Tegenaria derhami), the ordinary mosquito (Culex pipiens), Majeed (Attagenus Smirnovi Zhan), developed in SU NIELS them. Mechnikov RAMS.

For diagnostic allergens as feedstock used a mixture of frozen insects of each species separately.

A portion of one of these species of synanthropic insects from the freezer transferred into a porcelain mortar and finely cut with scissors to the size of the particles 1 mm

Conduct degreasing the crushed material by adding in raw materials ethyl ester in zootoxin and 1:4, keeping raw materials in the air within 15 minutes the Mixture is filtered through a filter paper and left in a fume hood to evaporate the ether.

Crushed partially skimmed raw materials in a porcelain mortar, pounding to powder. The resulting powder was subjected to secondary degreasing, which are produced in glass jars with ground stoppers, using 60 grams of raw material 240 ml of ether.

Fully skimmed raw materials scattered on enamelled trays with a filter paper and dried in a fume hood to evaporate the ether.

The powder is placed in a porcelain mortar and add the liquid for extraction in a 1:1 ratio. Powder pound with the pestle until a homogeneous suspension and transferred to the bottle, which then add another extracting fluid, which comprises sodium chloride, potassium phosphate and sodium at pH 7.0-7.2, the ratio of 2:1. The contents of the bottle gently mix and leave for 30-40 minutes, after which control the pH. The pH correction is performed by adding 1.0 mol/l solution of sodium hydroxide or 0.1 mol/l hydrochloric acid to a pH of 7.0 to 7.2. During the following three days for more complete extraction of protein-polysaccharide complexes carry out the following processing modes: daily bottle of extractable material is placed on the device for shaking the of alcosta in containers three times for 30 minutes with an interval of 1.5 hours.

In the intervals between shaking the bottle with the extracted material should be placed in a refrigerated chamber at a temperature of from 2 to 10°C. Daily correction of pH allergenic extract to 7.0 to 7.2. After extraction the supernatant liquid is poured and carry out centrifuged in refrigerated centrifuge at 6000 rpm for 40 minutes followed by filtration through a paper filter. Then hold sterilizing filtration. In day of carrying out this operation it is necessary to control the pH of the allergenic extract. They control the stock solution of the allergen in the same or next day with all the rules of asepsis selected from bottle samples for verification: seeding for sterility, check the pH, which should have a value of 7.0 to 7.2. Visually assess the physical properties of the drug should be transparent, without foreign inclusions, light brown color. The content of protein nitrogen units define method Nessler. A sterile solution of allergen to stabilize the physical and biological properties bear from 1 to 3 months at a temperature of from 2 to 100°C. In cases when the content of units of protein nitrogen in the mother solution of the allergen more than 10,000 PNU/ml, the mother solution of the allergen bred sterile extracting liquid.

After R is sliwa allergen receive the finished form of the drug.

The resulting preparation was studied taking into account the goals and objectives.

The assessment of specific activity of the extract was carried out in an indirect test degranulation of mast cells (DTK) perianalnoe fluid of rats with serum of patients with bronchial asthma, have a history of contact with insects and linking their disease with them.

The average of the DCT with the sera of sensitized rats and preparations of allergens from different insects represented in the table.

Insecty allergen The number degranulating fat cells (%)
Ash cockroach 45
Red cockroach 29
Black cockroach 48
American cockroach 37
Homemade fly 44
Mol 32
Bug 30
Ant 32
Spider 28
Komar 27
Coheed 18

These data suggest that sensitization with allergens from different species of insects is accompanied by the appearance in the serum of animals ragenovich antibodies that participate in the reactions of immediate type.

The structural composition of the obtained preparations of allergens were studied by the method of polyacrylamide gel electrophoresis according to the method of Laemmli.

The results of electrophoresis showed that the investigated drugs are a heterogeneous mixture of different proteins.

In an electrophoretic separation of allergens various insects was determined by the following fraction:

for German cockroach fraction (mol. weighing from 18 to 60 KD;

black cockroach 20-35 KD and KD

American cockroach before 20cd and more intensely colored 45 KD

ash cockroach 20-40 KD and 65 KD

fly faction 31 KD

mol group fractions from 20 to 40 KD

Coheed 20 KD

the spider is the most intensely colored faction, 26, 35, 38, 110 KD

bug 40-60 KD

ant 18, 24 and slightly coloured group with Mm from 45 and above KD.

Example 2. Carried out analogously to example 1, except that a portion of one of these species of synanthropic insects from the freezer transferred into a porcelain mortar and finely cut with scissors to the size of the particles 3 mm. Conduct degreasing ISM is Lenogo raw material by adding in raw materials ethyl ester in a ratio of 1:3 and curing of raw materials in the air within 20 minutes

Test the diagnostic value of the preparation was carried out according to the program approved by the Committee on medical immunobiological drugs in adults and children 12-15 years in medical institutions of Moscow and Reutov.

Studies of substances from different insect species by the method of enzyme-linked immunosorbent assay showed high specific activity. The specific activity of allergens from insects studied in the enzyme-linked immunosorbent assay (ELISA) using conjugate monoclonal anti-Ig E antibodies with peroxidase horseradish root.

The study group was 40 atopic patients aged 12 years and older with clinically identified sensitization to the allergen house dust and house dust mites.

The results showed that the allergen-specific IgE antibodies to allergens from different insect species were detected in 30% of patients, indicating a high specific activity developed drugs allergens from different species of insects.

1. The method of obtaining diagnostic allergen, comprising the alkaline extraction of raw materials, centrifuging, filtering and sterilizing filtration to obtain the final form of diagnostic allergen, characterized in that the feedstock used the Ute frozen synanthropic insects, crushed raw materials on the particle size of 1-3 mm, degreased crushed raw material by adding in raw materials ethyl ester in a ratio of 1:3-4, sustain raw material in ethyl ether for 15-20 min with subsequent removal of the ether by filtration of the mixture, again degrease raw materials ethyl ether, dried to remove the ether, crushed completely skimmed raw materials to a powder, and extracting the resulting powder is carried out in two stages, the first of which poured the powder extracting liquid 1:1 and stirred until a homogeneous suspension, and in the second stage, the resulting suspension is mixed with the extracting liquid in the ratio 2:1 and mix by shaking the suspension three times at 30 min intervals between shaking for 1.5 h at a temperature of 2-10°C for 3 days with daily pH correction allergenic extract to 7.0 to 7.2.

2. The method according to claim 1, characterized in that use each type of the following frozen synanthropic insects: red cockroach (Blattella germanica), black cockroach (Blatta orientalis), the American cockroach (Periplaneta americana), cockroach ash (marble) (Neuphoeta cinerea), the fly room (Musca domestica), mol a (Tinea pelionella), the bed bug (Cimex lectularis), red ant house (Monomorium pharaonis), the house spider (Tegenaria derhami), the ordinary mosquito (Culex pipiens), Majeed (Attagenus Smirovi Zhan).

 

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